Excavators are one of the main construction machinery widely used in all kinds of earth and stone works, and they are also one of the machinery that are most senseitive to changes in downstream demand. According to the latest data of China Construction Machinery Association, the 25 excavator manufacturers included in the statistics sold a total of 20,939 excavators of various types in August 2020, a year-on-year increase of 51.3%. Domestic excavator sales have maintained a year-on-year growth of more than 50% for five consecutive months. The total sales in the first eight months of this year accounted for 89.3% of all sales in 2019. The market believes that the demand brought by the resumption of domestic work and production and infrastructure, real estate combined is the main factor driving the rebound in construction machinery sales in the second quarter. It is expected that with the continuous progress of the construction of "new infrastructure and new urbanization initiatives and major projects" in the fourth quarter and the implementation of a number of major projects, the construction machinery industry will remain booming and the growth momentum is expected to continue. It should be pointed out that the sales data of excavator is an effective window for measuring domestic infrastructure investment and construction, which is related to urban construction, road and bridge construction, real estate construction and so on. The surge in excavator sales in the first eight months shows that domestic infrastructure investment has picked up significantly this year. In terms of fixed asset investment, in the first seven months of this year, fixed asset investment (excluding rural households) nationwide was 3.2921.4 trillion yuan, down 1.6% year on year, and the rate of decline narrowed by 1.5 percentage points in the first six months of this year. In the tertiary sector, infrastructure investment (excluding electricity, heat, gas and water production and supply) fell 1.0% year on year, and the rate of decline narrowed by 1.7 percentage points from January to June.